Winogender
Models resolve pronouns in sentences about occupations. Accuracy shows whether gender stereotypes sway coreference.
- Released
- April 2018
- Kind
- Bias, fairness and politics
- Level
- Everyday
- Scored
- Checked automatically
- Answers
- Multiple choice
- Tasks
- All public
- Strongest model tested
-
Gemma 2 27B #189 on the capability index
- Last in a system card
- July 2024
- Last model added
- July 2024
In the authors’ words
We present an empirical study of gender bias in coreference resolution systems. We first introduce a novel, Winograd schema-style set of minimal pair sentences that differ only by pronoun gender. With these "Winogender schemas," we evaluate and confirm systematic gender bias in three publicly-available coreference resolution systems, and correlate this bias with real-world and textual gender statistics.
Gemma 2 9B leads with 79.2% among models released by June 2024
Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.
The newest model with a score here came out in June 2024, and nobody has reported a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:
- Claude Fable 5.2
-
Gemini 4 Carbon
- GPT-6 Astra
- Claude Opus 5.5
- and 16 more
- 1
Gemma 2 9B 79.2%
- 2
Gemma 2 27B 77.2%
- 3
Gemma 7B 54.2%
- 4
Gemma 2B 51.3%
Source: Labs’ model cards
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | | 79.2% | Jul 2024 | Lab model card | |
| 2 | | 77.2% | Jul 2024 | Lab model card | |
| 3 | | 54.2% | Mar 2024 | Lab model card | |
| 4 | | 51.3% | Mar 2024 | Lab model card |
2 models have held number one in labs’ own numbers since 2023
Lab claims count from the day the card came out, independent runs from the model’s release.
Source: Labs’ model cards
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Source: Labs’ model cards
Labs report it only in system cards
We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark. Some system cards do, below.
4 system cards report it, from 1 lab
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| Jul 31, 2024 | | 79.2 | Winogender, top-1, IT (Table 18) | Bias |
| Jul 31, 2024 | | 77.2 | Winogender, top-1, IT (Table 18) | Bias |
| Mar 13, 2024 | | 54.2 | Winogender, top-1, IT (Table 8) | Bias |
| Mar 13, 2024 | | 51.3 | Winogender, top-1, IT (Table 8) | Bias |
More in Safety and alignment
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- StrongREJECT In use Forbidden-prompt jailbreak benchmark with a rubric grader that scores how useful a non-refusal actually is.
Inkling 98.6%
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Gemini 4 Carbon 0%
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Muse Spark 1.2 88.4%
- Lakera B3 (Backbone Breaker Benchmark) In use Crowdsourced prompt-injection attacks hit backbone LLMs inside agent threat snapshots at three defense levels. The score is attack resistance, 100 minus the board's vulnerability percentage. Claude Opus 4.5 89%
- IHEval In use Models face conflicts between system, user and tool instructions. Reports a composite score for following the higher-priority instruction. GPT-4o 70%